Techfest 15 question set

I mean, maybe I don’t know the exact rules of techfest, but I think they didnt mention about question upgrdtn. Yesterday 2 questns were added,and suddenly dey were replaced by the new 1(I had olrdy done 1 ROSE). Today again PUCK question got updated. According to codechef it is clear that "Five problems will be uploaded on the site in the beginning of the competition and one new problem gets added subsequently after every five hours."
That’s it. Then why you guyz are keep changing the question set,Just curiosity.
Thanq :slight_smile: